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Soeren Moch 61eeaa1b66 media: dmxdev: remove dvb_ringbuffer_flush() on writer side 
commit 414abbd2cd upstream.

In dvb_ringbuffer lock-less synchronizationof reader and writer threads is done
with separateread and write pointers. Sincedvb_ringbuffer_flush() modifies the
read pointer, this function must not be called from the writer thread.
This patch removes the dvb_ringbuffer_flush() calls in the dmxdev ringbuffer
write functions, this fixes Oopses "Unable to handle kernel paging request"
I could observe for the call chaindvb_demux_read ->dvb_dmxdev_buffer_read ->
dvb_ringbuffer_read_user -> __copy_to_user (the reader side of the ringbuffer).
The flush calls at the write side are not necessary anyway since ringbuffer_flush
is also called in dvb_dmxdev_buffer_read() when an error condition is set in the
ringbuffer.
This patch should also be applied to stable kernels.

Signed-off-by: Soeren Moch <smoch@web.de>
Reviewed-by: Sakari Ailus <sakari.ailus@iki.fi>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-07-28 16:30:21 -07:00
..
accessibility
acpi ACPI / PM: Fix corner case in acpi_bus_update_power() 2013-07-21 18:21:29 -07:00
amba
ata sata_highbank: increase retry count but shorten duration for Calxeda controller 2013-07-25 14:07:28 -07:00
atm
auxdisplay
base firmware loader: fix use-after-free by double abort 2013-06-18 10:41:55 -07:00
bcma bcma: add more core IDs 2013-05-17 14:31:05 -04:00
block nbd: correct disconnect behavior 2013-07-21 18:21:29 -07:00
bluetooth Bluetooth: btmrvl: fix thread stopping race 2013-06-13 13:05:40 -04:00
bus
cdrom drivers/cdrom/cdrom.c: use kzalloc() for failing hardware 2013-07-13 11:42:26 -07:00
char random: fix accounting race condition with lockless irq entropy_count update 2013-05-24 16:22:52 -07:00
clk ARM: tegra30: clocks: Fix pciex clock registration 2013-06-16 11:25:45 -07:00
clocksource clocksource: dw_apb: Fix error check 2013-07-25 14:07:29 -07:00
connector
cpufreq cpufreq: Revert commit 2f7021a8 to fix CPU hotplug regression 2013-07-25 14:07:23 -07:00
cpuidle
crypto Merge git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6 2013-06-10 13:25:50 -07:00
dca
devfreq
dio
dma drivers/dma/pl330.c: fix locking in pl330_free_chan_resources() 2013-07-21 18:21:35 -07:00
edac EDAC: Fix lockdep splat 2013-07-28 16:30:11 -07:00
eisa
extcon Removal of GENERIC_GPIO for v3.10 2013-05-09 09:59:16 -07:00
firewire IEEE 1394 (FireWire) subsystem changes: 2013-05-09 10:11:48 -07:00
firmware efivar: fix oops in efivar_update_sysfs_entries() caused by memory reuse 2013-05-13 20:20:02 +01:00
gpio gpio/omap: don't use linear domain mapping for OMAP1 2013-06-25 23:13:40 -07:00
gpu drm/nv50-/disp: Use output specific mask in interrupt 2013-07-25 14:07:42 -07:00
hid HID: apple: Add support for the 2013 Macbook Air 2013-07-21 18:21:29 -07:00
hsi
hv drivers: hv: switch to use mb() instead of smp_mb() 2013-07-21 18:21:25 -07:00
hwmon hwmon: (nct6775) Drop unsupported fan alarm attributes for NCT6775 2013-07-25 14:07:27 -07:00
hwspinlock
i2c i2c-piix4: Add AMD CZ SMBus device ID 2013-07-25 14:07:28 -07:00
ide
idle Merge branch 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux 2013-05-11 15:23:17 -07:00
iio iio: inkern: fix iio_convert_raw_to_processed_unlocked 2013-07-25 14:07:23 -07:00
infiniband Merge branches 'iser' and 'qib' into for-next 2013-06-04 17:06:46 -07:00
input Input: bcm5974 - add support for the 2013 MacBook Air 2013-07-21 18:21:29 -07:00
iommu iommu/amd: Only unmap large pages from the first pte 2013-07-25 14:07:42 -07:00
ipack
irqchip ARM: SoC fixes for 3.10-rc 2013-06-22 09:44:45 -10:00
isdn isdn/kcapi: fix a small underflow 2013-05-20 13:38:14 -07:00
leds drivers/leds/leds-ot200.c: fix error caused by shifted mask 2013-05-24 16:22:51 -07:00
lguest
macintosh
mailbox
md bcache: Journal replay fix 2013-07-28 16:30:10 -07:00
media media: dmxdev: remove dvb_ringbuffer_flush() on writer side 2013-07-28 16:30:21 -07:00
memory drivers/memory: don't check resource with devm_ioremap_resource 2013-05-18 11:55:52 +02:00
memstick
message
mfd mfd: tps6586x: correct device name of the regulator cell 2013-06-24 12:37:47 +01:00
misc Char / Misc fixes for 3.10-rc6 2013-06-14 19:15:36 -10:00
mmc mmc: omap_hsmmc: Skip platform_get_resource_byname() for dt case 2013-05-26 14:23:11 -04:00
mtd drivers/mtd/nand: don't check resource with devm_ioremap_resource 2013-05-18 11:55:55 +02:00
net macvtap: do not zerocopy if iov needs more pages than MAX_SKB_FRAGS 2013-07-28 16:30:05 -07:00
nfc NFC: mei: Do not disable MEI devices from their remove routine 2013-05-21 10:48:41 +02:00
ntb NTB: Multiple NTB client fix 2013-05-15 10:58:22 -07:00
nubus
of of: Fix address decoding on Bimini and js2x machines 2013-07-25 14:07:32 -07:00
oprofile
parisc parisc: fix LMMIO mismatch between PAT length and MASK register 2013-07-21 18:21:26 -07:00
parport parisc: parport0: fix this legacy no-device port driver! 2013-06-01 14:46:42 +02:00
pci ahci: Add AMD CZ SATA device ID 2013-07-21 18:21:30 -07:00
pcmcia pcmcia: at91_cf: fix gpio_get_value in at91_cf_get_status 2013-07-21 18:21:25 -07:00
pinctrl Renesas ARM based SoC fixes for v3.10 2013-06-07 18:11:02 -07:00
platform x86 / platform / hp_wmi: Fix bluetooth_rfkill misuse in hp_wmi_rfkill_setup() 2013-06-01 23:51:48 +02:00
pnp
power charger-manager: Ensure event is not used as format string 2013-07-13 11:42:26 -07:00
pps
ps3
ptp ptp_pch: fix error handling in pch_probe() 2013-05-25 21:24:15 -07:00
pwm drivers/pwm: don't check resource with devm_ioremap_resource 2013-05-18 11:55:58 +02:00
rapidio RAPIDIO: IDT_GEN2: Fix build error. 2013-07-28 16:30:07 -07:00
regulator mfd: tps6586x: correct device name of the regulator cell 2013-06-24 12:37:47 +01:00
remoteproc
reset
rpmsg
rtc drivers/rtc/rtc-rv3029c2.c: fix disabling AIE irq 2013-07-21 18:21:28 -07:00
s390 SCSI: zfcp: status read buffers on first adapter open with link down 2013-07-25 14:07:30 -07:00
sbus
scsi SCSI: megaraid_sas: fix memory leak if SGL has zero length entries 2013-07-28 16:30:12 -07:00
sfi
sh
sn
spi Merge remote-tracking branch 'spi/fix/s3c64xx' into spi-linus 2013-06-24 12:28:29 +01:00
ssb - Lots of cleanups from Artem, including deletion of some obsolete drivers 2013-05-09 10:15:46 -07:00
ssbi
staging staging: line6: Fix unlocked snd_pcm_stop() call 2013-07-25 14:07:42 -07:00
target iscsi-target: Remove left over v3.10-rc debug printks 2013-06-20 16:47:41 -07:00
tc
thermal drivers/thermal: don't check resource with devm_ioremap_resource 2013-05-18 11:57:30 +02:00
tty pch_uart: Add uart_clk selection for the MinnowBoard 2013-07-21 18:21:23 -07:00
uio uio: UIO_DMEM_GENIRQ should depend on HAS_DMA 2013-05-21 10:13:23 -07:00
usb usb: cp210x support SEL C662 Vendor/Device 2013-07-28 16:30:20 -07:00
uwb
vfio vfio: fix crash on rmmod 2013-06-05 08:54:16 -06:00
vhost vhost-net: fix use-after-free in vhost_net_flush 2013-07-28 16:29:57 -07:00
video atmel_lcdfb: blank the backlight on remove 2013-06-01 03:18:55 +08:00
virt
virtio virtio: support unlocked queue poll 2013-07-28 16:29:55 -07:00
vlynq
vme
w1 drivers/w1/masters: don't check resource with devm_ioremap_resource 2013-05-18 11:58:03 +02:00
watchdog drivers/watchdog: don't check resource with devm_ioremap_resource 2013-05-18 11:58:04 +02:00
xen xen/tmem: Don't over-write tmem_frontswap_poolid after tmem_frontswap_init set it. 2013-06-10 10:14:33 -04:00
zorro
Kconfig
Makefile